That was the biggest issue since the beginning - the mix and mash of supported features just meant nothing just worked - like sending files might work depending

That was the biggest issue since the beginning - the mix and mash of supported features just meant nothing just worked - like sending files might work depending on which contact you send it to, which is experience nobody wants. It just needs feature versions - you support this one, means you support all of the features deemed important for users, no partial mishmash.